(bug 19441) Updated date formatting for Lithuanian

[mediawiki.git] / includes / ProtectionForm.php

<?php
/**
 * Copyright (C) 2005 Brion Vibber <brion@pobox.com>
 * http://www.mediawiki.org/
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 * http://www.gnu.org/copyleft/gpl.html
 */

/**
 * Handles the page protection UI and backend
 */
class ProtectionForm {
        /** A map of action to restriction level, from request or default */
        var $mRestrictions = array();

        /** The custom/additional protection reason */
        var $mReason = '';

        /** The reason selected from the list, blank for other/additional */
        var $mReasonSelection = '';

        /** True if the restrictions are cascading, from request or existing protection */
        var $mCascade = false;

        /** Map of action to "other" expiry time. Used in preference to mExpirySelection. */
        var $mExpiry = array();

        /**
         * Map of action to value selected in expiry drop-down list.
         * Will be set to 'othertime' whenever mExpiry is set.
         */
        var $mExpirySelection = array();

        /** Permissions errors for the protect action */
        var $mPermErrors = array();

        /** Types (i.e. actions) for which levels can be selected */
        var $mApplicableTypes = array();

        /** Map of action to the expiry time of the existing protection */
        var $mExistingExpiry = array();

        function __construct( Article $article ) {
                global $wgRequest, $wgUser;
                global $wgRestrictionTypes, $wgRestrictionLevels;
                $this->mArticle = $article;
                $this->mTitle = $article->mTitle;
                $this->mApplicableTypes = $this->mTitle->exists() ? $wgRestrictionTypes : array('create');

                $this->mCascade = $this->mTitle->areRestrictionsCascading();

                // The form will be available in read-only to show levels.
                $this->mPermErrors = $this->mTitle->getUserPermissionsErrors('protect',$wgUser);
                $this->disabled = wfReadOnly() || $this->mPermErrors != array();
                $this->disabledAttrib = $this->disabled
                        ? array( 'disabled' => 'disabled' )
                        : array();

                $this->mReason = $wgRequest->getText( 'mwProtect-reason' );
                $this->mReasonSelection = $wgRequest->getText( 'wpProtectReasonSelection' );
                $this->mCascade = $wgRequest->getBool( 'mwProtect-cascade', $this->mCascade );

                foreach( $this->mApplicableTypes as $action ) {
                        // Fixme: this form currently requires individual selections,
                        // but the db allows multiples separated by commas.
                        $this->mRestrictions[$action] = implode( '', $this->mTitle->getRestrictions( $action ) );

                        if ( !$this->mRestrictions[$action] ) {
                                // No existing expiry
                                $existingExpiry = '';
                        } else {
                                $existingExpiry = $this->mTitle->getRestrictionExpiry( $action );
                        }
                        $this->mExistingExpiry[$action] = $existingExpiry;

                        $requestExpiry = $wgRequest->getText( "mwProtect-expiry-$action" );
                        $requestExpirySelection = $wgRequest->getVal( "wpProtectExpirySelection-$action" );

                        if ( $requestExpiry ) {
                                // Custom expiry takes precedence
                                $this->mExpiry[$action] = $requestExpiry;
                                $this->mExpirySelection[$action] = 'othertime';
                        } elseif ( $requestExpirySelection ) {
                                // Expiry selected from list
                                $this->mExpiry[$action] = '';
                                $this->mExpirySelection[$action] = $requestExpirySelection;
                        } elseif ( $existingExpiry == 'infinity' ) {
                                // Existing expiry is infinite, use "infinite" in drop-down
                                $this->mExpiry[$action] = '';
                                $this->mExpirySelection[$action] = 'infinite';
                        } elseif ( $existingExpiry ) {
                                // Use existing expiry in its own list item
                                $this->mExpiry[$action] = '';
                                $this->mExpirySelection[$action] = $existingExpiry;
                        } else {
                                // Final default: infinite
                                $this->mExpiry[$action] = '';
                                $this->mExpirySelection[$action] = 'infinite';
                        }

                        $val = $wgRequest->getVal( "mwProtect-level-$action" );
                        if( isset( $val ) && in_array( $val, $wgRestrictionLevels ) ) {
                                // Prevent users from setting levels that they cannot later unset
                                if( $val == 'sysop' ) {
                                        // Special case, rewrite sysop to either protect and editprotected
                                        if( !$wgUser->isAllowed('protect') && !$wgUser->isAllowed('editprotected') )
                                                continue;
                                } else {
                                        if( !$wgUser->isAllowed($val) )
                                                continue;
                                }
                                $this->mRestrictions[$action] = $val;
                        }
                }
        }

        /**
         * Get the expiry time for a given action, by combining the relevant inputs.
         * Returns a 14-char timestamp or "infinity", or false if the input was invalid
         */
        function getExpiry( $action ) {
                if ( $this->mExpirySelection[$action] == 'existing' ) {
                        return $this->mExistingExpiry[$action];
                } elseif ( $this->mExpirySelection[$action] == 'othertime' ) {
                        $value = $this->mExpiry[$action];
                } else {
                        $value = $this->mExpirySelection[$action];
                }
                if ( $value == 'infinite' || $value == 'indefinite' || $value == 'infinity' ) {
                        $time = Block::infinity();
                } else {
                        $unix = strtotime( $value );

                        if ( !$unix || $unix === -1 ) {
                                return false;
                        }

                        // Fixme: non-qualified absolute times are not in users specified timezone
                        // and there isn't notice about it in the ui
                        $time = wfTimestamp( TS_MW, $unix );
                }
                return $time;
        }

        function execute() {
                global $wgRequest, $wgOut;
                if( $wgRequest->wasPosted() ) {
                        if( $this->save() ) {
                                $q = $this->mArticle->isRedirect() ? 'redirect=no' : '';
                                $wgOut->redirect( $this->mTitle->getFullUrl( $q ) );
                        }
                } else {
                        $this->show();
                }
        }

        function show( $err = null ) {
                global $wgOut, $wgUser;

                $wgOut->setRobotPolicy( 'noindex,nofollow' );

                if( is_null( $this->mTitle ) ||
                        $this->mTitle->getNamespace() == NS_MEDIAWIKI ) {
                        $wgOut->showFatalError( wfMsg( 'badarticleerror' ) );
                        return;
                }

                list( $cascadeSources, /* $restrictions */ ) = $this->mTitle->getCascadeProtectionSources();

                if ( "" != $err ) {
                        $wgOut->setSubtitle( wfMsgHtml( 'formerror' ) );
                        $wgOut->addHTML( "<p class='error'>{$err}</p>\n" );
                }

                if ( $cascadeSources && count($cascadeSources) > 0 ) {
                        $titles = '';

                        foreach ( $cascadeSources as $title ) {
                                $titles .= '* [[:' . $title->getPrefixedText() . "]]\n";
                        }

                        $wgOut->wrapWikiMsg( "<div id=\"mw-protect-cascadeon\">\n$1\n" . $titles . "</div>", array( 'protect-cascadeon', count($cascadeSources) ) );
                }

                $sk = $wgUser->getSkin();
                $titleLink = $sk->link( $this->mTitle );
                $wgOut->setPageTitle( wfMsg( 'protect-title', $this->mTitle->getPrefixedText() ) );
                $wgOut->setSubtitle( wfMsg( 'protect-backlink', $titleLink ) );

                # Show an appropriate message if the user isn't allowed or able to change
                # the protection settings at this time
                if( $this->disabled ) {
                        if( wfReadOnly() ) {
                                $wgOut->readOnlyPage();
                        } elseif( $this->mPermErrors ) {
                                $wgOut->addWikiText( $wgOut->formatPermissionsErrorMessage( $this->mPermErrors ) );
                        }
                } else {
                        $wgOut->addWikiMsg( 'protect-text', $this->mTitle->getPrefixedText() );
                }

                $wgOut->addHTML( $this->buildForm() );

                $this->showLogExtract( $wgOut );
        }

        function save() {
                global $wgRequest, $wgUser;
                # Permission check!
                if ( $this->disabled ) {
                        $this->show();
                        return false;
                }

                $token = $wgRequest->getVal( 'wpEditToken' );
                if ( !$wgUser->matchEditToken( $token ) ) {
                        $this->show( wfMsg( 'sessionfailure' ) );
                        return false;
                }

                # Create reason string. Use list and/or custom string.
                $reasonstr = $this->mReasonSelection;
                if ( $reasonstr != 'other' && $this->mReason != '' ) {
                        // Entry from drop down menu + additional comment
                        $reasonstr .= wfMsgForContent( 'colon-separator' ) . $this->mReason;
                } elseif ( $reasonstr == 'other' ) {
                        $reasonstr = $this->mReason;
                }
                $expiry = array();
                foreach( $this->mApplicableTypes as $action ) {
                        $expiry[$action] = $this->getExpiry( $action );
                        if( empty($this->mRestrictions[$action]) )
                                continue; // unprotected
                        if ( !$expiry[$action] ) {
                                $this->show( wfMsg( 'protect_expiry_invalid' ) );
                                return false;
                        }
                        if ( $expiry[$action] < wfTimestampNow() ) {
                                $this->show( wfMsg( 'protect_expiry_old' ) );
                                return false;
                        }
                }

                # They shouldn't be able to do this anyway, but just to make sure, ensure that cascading restrictions aren't being applied
                #  to a semi-protected page.
                global $wgGroupPermissions;

                $edit_restriction = isset( $this->mRestrictions['edit'] ) ? $this->mRestrictions['edit'] : '';
                $this->mCascade = $wgRequest->getBool( 'mwProtect-cascade' );
                if ($this->mCascade && ($edit_restriction != 'protect') &&
                        !(isset($wgGroupPermissions[$edit_restriction]['protect']) && $wgGroupPermissions[$edit_restriction]['protect'] ) )
                        $this->mCascade = false;

                if ($this->mTitle->exists()) {
                        $ok = $this->mArticle->updateRestrictions( $this->mRestrictions, $reasonstr, $this->mCascade, $expiry );
                } else {
                        $ok = $this->mTitle->updateTitleProtection( $this->mRestrictions['create'], $reasonstr, $expiry['create'] );
                }

                if( !$ok ) {
                        throw new FatalError( "Unknown error at restriction save time." );
                }

                if( $wgRequest->getCheck( 'mwProtectWatch' ) ) {
                        $this->mArticle->doWatch();
                } elseif( $this->mTitle->userIsWatching() ) {
                        $this->mArticle->doUnwatch();
                }
                return $ok;
        }

        /**
         * Build the input form
         *
         * @return $out string HTML form
         */
        function buildForm() {
                global $wgUser, $wgLang;

                $mProtectreasonother = Xml::label( wfMsg( 'protectcomment' ), 'wpProtectReasonSelection' );
                $mProtectreason = Xml::label( wfMsg( 'protect-otherreason' ), 'mwProtect-reason' );

                $out = '';
                if( !$this->disabled ) {
                        $out .= $this->buildScript();
                        $out .= Xml::openElement( 'form', array( 'method' => 'post',
                                'action' => $this->mTitle->getLocalUrl( 'action=protect' ),
                                'id' => 'mw-Protect-Form', 'onsubmit' => 'ProtectionForm.enableUnchainedInputs(true)' ) );
                        $out .= Xml::hidden( 'wpEditToken',$wgUser->editToken() );
                }

                $out .= Xml::openElement( 'fieldset' ) .
                        Xml::element( 'legend', null, wfMsg( 'protect-legend' ) ) .
                        Xml::openElement( 'table', array( 'id' => 'mwProtectSet' ) ) .
                        Xml::openElement( 'tbody' );

                foreach( $this->mRestrictions as $action => $selected ) {
                        /* Not all languages have V_x <-> N_x relation */
                        $msg = wfMsg( 'restriction-' . $action );
                        if( wfEmptyMsg( 'restriction-' . $action, $msg ) ) {
                                $msg = $action;
                        }
                        $out .= "<tr><td>".
                        Xml::openElement( 'fieldset' ) .
                        Xml::element( 'legend', null, $msg ) .
                        Xml::openElement( 'table', array( 'id' => "mw-protect-table-$action" ) ) .
                                "<tr><td>" . $this->buildSelector( $action, $selected ) . "</td></tr><tr><td>";

                        $reasonDropDown = Xml::listDropDown( 'wpProtectReasonSelection',
                                wfMsgForContent( 'protect-dropdown' ),
                                wfMsgForContent( 'protect-otherreason-op' ),
                                $this->mReasonSelection,
                                'mwProtect-reason', 4 );
                        $scExpiryOptions = wfMsgForContent( 'protect-expiry-options' );

                        $showProtectOptions = ($scExpiryOptions !== '-' && !$this->disabled);

                        $mProtectexpiry = Xml::label( wfMsg( 'protectexpiry' ), "mwProtectExpirySelection-$action" );
                        $mProtectother = Xml::label( wfMsg( 'protect-othertime' ), "mwProtect-$action-expires" );

                        $expiryFormOptions = '';
                        if ( $this->mExistingExpiry[$action] && $this->mExistingExpiry[$action] != 'infinity' ) {
                                $timestamp = $wgLang->timeanddate( $this->mExistingExpiry[$action] );
                                $d = $wgLang->date( $this->mExistingExpiry[$action] );
                                $t = $wgLang->time( $this->mExistingExpiry[$action] );
                                $expiryFormOptions .=
                                        Xml::option(
                                                wfMsg( 'protect-existing-expiry', $timestamp, $d, $t ),
                                                'existing',
                                                $this->mExpirySelection[$action] == 'existing'
                                        ) . "\n";
                        }

                        $expiryFormOptions .= Xml::option( wfMsg( 'protect-othertime-op' ), "othertime" ) . "\n";
                        foreach( explode(',', $scExpiryOptions) as $option ) {
                                if ( strpos($option, ":") === false ) {
                                        $show = $value = $option;
                                } else {
                                        list($show, $value) = explode(":", $option);
                                }
                                $show = htmlspecialchars($show);
                                $value = htmlspecialchars($value);
                                $expiryFormOptions .= Xml::option( $show, $value, $this->mExpirySelection[$action] === $value ) . "\n";
                        }
                        # Add expiry dropdown
                        if( $showProtectOptions && !$this->disabled ) {
                                $out .= "
                                        <table><tr>
                                                <td class='mw-label'>
                                                        {$mProtectexpiry}
                                                </td>
                                                <td class='mw-input'>" .
                                                        Xml::tags( 'select',
                                                                array(
                                                                        'id' => "mwProtectExpirySelection-$action",
                                                                        'name' => "wpProtectExpirySelection-$action",
                                                                        'onchange' => "ProtectionForm.updateExpiryList(this)",
                                                                        'tabindex' => '2' ) + $this->disabledAttrib,
                                                                $expiryFormOptions ) .
                                                "</td>
                                        </tr></table>";
                        }
                        # Add custom expiry field
                        $attribs = array( 'id' => "mwProtect-$action-expires",
                                'onkeyup' => 'ProtectionForm.updateExpiry(this)' ) + $this->disabledAttrib;
                        $out .= "<table><tr>
                                        <td class='mw-label'>" .
                                                $mProtectother .
                                        '</td>
                                        <td class="mw-input">' .
                                                Xml::input( "mwProtect-expiry-$action", 50, $this->mExpiry[$action], $attribs ) .
                                        '</td>
                                </tr></table>';
                        $out .= "</td></tr>" .
                        Xml::closeElement( 'table' ) .
                        Xml::closeElement( 'fieldset' ) .
                        "</td></tr>";
                }

                $out .= Xml::closeElement( 'tbody' ) . Xml::closeElement( 'table' );

                // JavaScript will add another row with a value-chaining checkbox
                if( $this->mTitle->exists() ) {
                        $out .= Xml::openElement( 'table', array( 'id' => 'mw-protect-table2' ) ) .
                                Xml::openElement( 'tbody' );
                        $out .= '<tr>
                                        <td></td>
                                        <td class="mw-input">' .
                                                Xml::checkLabel( wfMsg( 'protect-cascade' ), 'mwProtect-cascade', 'mwProtect-cascade',
                                                        $this->mCascade, $this->disabledAttrib ) .
                                        "</td>
                                </tr>\n";
                        $out .= Xml::closeElement( 'tbody' ) . Xml::closeElement( 'table' );
                }

                # Add manual and custom reason field/selects as well as submit
                if( !$this->disabled ) {
                        $out .=  Xml::openElement( 'table', array( 'id' => 'mw-protect-table3' ) ) .
                                Xml::openElement( 'tbody' );
                        $out .= "
                                <tr>
                                        <td class='mw-label'>
                                                {$mProtectreasonother}
                                        </td>
                                        <td class='mw-input'>
                                                {$reasonDropDown}
                                        </td>
                                </tr>
                                <tr>
                                        <td class='mw-label'>
                                                {$mProtectreason}
                                        </td>
                                        <td class='mw-input'>" .
                                                Xml::input( 'mwProtect-reason', 60, $this->mReason, array( 'type' => 'text',
                                                        'id' => 'mwProtect-reason', 'maxlength' => 255 ) ) .
                                        "</td>
                                </tr>
                                <tr>
                                        <td></td>
                                        <td class='mw-input'>" .
                                                Xml::checkLabel( wfMsg( 'watchthis' ),
                                                        'mwProtectWatch', 'mwProtectWatch',
                                                        $this->mTitle->userIsWatching() || $wgUser->getOption( 'watchdefault' ) ) .
                                        "</td>
                                </tr>
                                <tr>
                                        <td></td>
                                        <td class='mw-submit'>" .
                                                Xml::submitButton( wfMsg( 'confirm' ), array( 'id' => 'mw-Protect-submit' ) ) .
                                        "</td>
                                </tr>\n";
                        $out .= Xml::closeElement( 'tbody' ) . Xml::closeElement( 'table' );
                }
                $out .= Xml::closeElement( 'fieldset' );

                if ( $wgUser->isAllowed( 'editinterface' ) ) {
                        $title = Title::makeTitle( NS_MEDIAWIKI, 'Protect-dropdown' );
                        $link = $wgUser->getSkin()->link(
                                $title,
                                wfMsgHtml( 'protect-edit-reasonlist' ),
                                array(),
                                array( 'action' => 'edit' )
                        );
                        $out .= '<p class="mw-protect-editreasons">' . $link . '</p>';
                }

                if ( !$this->disabled ) {
                        $out .= Xml::closeElement( 'form' ) .
                                $this->buildCleanupScript();
                }

                return $out;
        }

        function buildSelector( $action, $selected ) {
                global $wgRestrictionLevels, $wgUser;

                $levels = array();
                foreach( $wgRestrictionLevels as $key ) {
                        //don't let them choose levels above their own (aka so they can still unprotect and edit the page). but only when the form isn't disabled
                        if( $key == 'sysop' ) {
                                //special case, rewrite sysop to protect and editprotected
                                if( !$wgUser->isAllowed('protect') && !$wgUser->isAllowed('editprotected') && !$this->disabled )
                                        continue;
                        } else {
                                if( !$wgUser->isAllowed($key) && !$this->disabled )
                                        continue;
                        }
                        $levels[] = $key;
                }

                $id = 'mwProtect-level-' . $action;
                $attribs = array(
                        'id' => $id,
                        'name' => $id,
                        'size' => count( $levels ),
                        'onchange' => 'ProtectionForm.updateLevels(this)',
                        ) + $this->disabledAttrib;

                $out = Xml::openElement( 'select', $attribs );
                foreach( $levels as $key ) {
                        $out .= Xml::option( $this->getOptionLabel( $key ), $key, $key == $selected );
                }
                $out .= Xml::closeElement( 'select' );
                return $out;
        }

        /**
         * Prepare the label for a protection selector option
         *
         * @param string $permission Permission required
         * @return string
         */
        private function getOptionLabel( $permission ) {
                if( $permission == '' ) {
                        return wfMsg( 'protect-default' );
                } else {
                        $key = "protect-level-{$permission}";
                        $msg = wfMsg( $key );
                        if( wfEmptyMsg( $key, $msg ) )
                                $msg = wfMsg( 'protect-fallback', $permission );
                        return $msg;
                }
        }

        function buildScript() {
                global $wgStylePath, $wgStyleVersion;
                return Xml::tags( 'script', array(
                        'type' => 'text/javascript',
                        'src' => $wgStylePath . "/common/protect.js?$wgStyleVersion.1" ), '' );
        }

        function buildCleanupScript() {
                global $wgRestrictionLevels, $wgGroupPermissions;
                $script = 'var wgCascadeableLevels=';
                $CascadeableLevels = array();
                foreach( $wgRestrictionLevels as $key ) {
                        if ( (isset($wgGroupPermissions[$key]['protect']) && $wgGroupPermissions[$key]['protect']) || $key == 'protect' ) {
                                $CascadeableLevels[] = "'" . Xml::escapeJsString( $key ) . "'";
                        }
                }
                $script .= "[" . implode(',',$CascadeableLevels) . "];\n";
                $options = (object)array(
                        'tableId' => 'mw-protect-table-move',
                        'labelText' => wfMsg( 'protect-unchain' ),
                        'numTypes' => count($this->mApplicableTypes),
                        'existingMatch' => 1 == count( array_unique( $this->mExistingExpiry ) ),
                );
                $encOptions = Xml::encodeJsVar( $options );

                $script .= "ProtectionForm.init($encOptions)";
                return Xml::tags( 'script', array( 'type' => 'text/javascript' ), $script );
        }

        /**
         * @param OutputPage $out
         * @access private
         */
        function showLogExtract( &$out ) {
                # Show relevant lines from the protection log:
                $out->addHTML( Xml::element( 'h2', null, LogPage::logName( 'protect' ) ) );
                LogEventsList::showLogExtract( $out, 'protect', $this->mTitle->getPrefixedText() );
        }
}